Air-cooled energy storage system

Abstract

The utility model discloses an air-cooled type energy storage system, which comprises a box body, a battery rack, a plurality of air guide shells and a heat exchange device, the battery rack is arranged in the box body and is provided with a plurality of battery cavities, the plurality of battery cavities are arranged at intervals along a first direction so as to form an air inlet channel extending along a vertical direction between two adjacent battery cavities, and the heat exchange device is arranged in the box body. The air inlet channel is communicated with the battery cavity, and the top of the battery rack and the top plate of the box body are spaced to form a mounting cavity; the multiple air guide shells are detachably mounted in the mounting cavity and arranged in the first direction, each air guide shell is provided with a guide-in opening and multiple guide-out openings, the multiple guide-out openings are located in the bottom of the air guide shell, and each guide-out opening corresponds to one air inlet channel; and the heat exchange device is arranged on the box body, and the heat exchange device is provided with an air outlet communicated with the lead-in port. According to the technical scheme, the heat dissipation uniformity can be improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of energy storage, particularly relates to a forced air cooling energy storage system. BACKGROUND

[0002] In the energy storage system, a heat dissipation system is usually arranged to quickly dissipate heat generated during the operation of the energy storage system to the outside, and the common heat dissipation methods include forced air cooling and liquid cooling. When forced air cooling is adopted, a more common method is to arrange air guide channels on the front side and the rear side of the battery rack respectively, so that the air flows from the front side to the battery rack and then flows out from the rear side after passing through the battery pack on the battery rack. This structure usually results in less air intake at the edge of the battery rack, and the overall heat dissipation uniformity is poor. SUMMARY

[0003] The main purpose of the utility model is to provide a forced air cooling energy storage system, which aims to improve the heat dissipation uniformity.

[0004] To achieve the above-mentioned purpose, the forced air cooling energy storage system provided by the utility model comprises:

[0005] a box body;

[0006] a battery rack arranged in the box body and having a plurality of battery cavities, the plurality of battery cavities being arranged at intervals along a first direction to form air inlet channels extending in an up-down direction between adjacent two battery cavities, the air inlet channels being in communication with the battery cavities, and a mounting cavity being formed between the top of the battery rack and the top plate of the box body; and

[0007] a plurality of air guide shells detachably mounted in the mounting cavity and arranged along the first direction, the air guide shells having an air inlet and a plurality of air outlets, the plurality of air outlets being located at the bottom of the air guide shells, and each air outlet being arranged corresponding to an air inlet channel; and

[0008] a heat exchange device arranged in the box body, the heat exchange device having an air outlet in communication with the air inlet.

[0009] Optionally, each air guide shell is arranged above adjacent two battery cavities, the air outlets on adjacent two air guide shells that are close to each other are arranged corresponding to the same air inlet channel, and the air inlet is located at the middle position of the air guide shell in the first direction.

[0010] Optionally, the box body is provided with a box door corresponding to the opening side of the battery cavity, the heat exchange device is arranged in the box door, and the air inlet is located on the side of the air guide shell facing the box door.

[0011] Optionally, the number of heat exchange devices is a plurality, and the plurality of heat exchange devices correspond to the plurality of air guide shells one by one.

[0012] Optionally, the air guide duct is connected between the air inlet and the air outlet, and one end of the air guide duct is fixed to the air guide shell, and the other end of the air guide duct is sealed against the edge portion of the air outlet.

[0013] Optionally, the battery rack has a plurality of first columns and a plurality of second columns, the plurality of first columns and the plurality of second columns are spaced apart along the first direction, the first columns and the second columns are spaced apart in the second direction, and two air guide shells are arranged between any two adjacent first columns.

[0014] Optionally, the air-cooled energy storage system further comprises a limiting member, the limiting member is detachably installed between the top of the battery rack and the top plate of the box body, and is arranged corresponding to the position between the two air guide shells between any two adjacent first columns to limit the side of the air guide shell away from the second column.

[0015] Optionally, the heat exchange device further has an air inlet and a heat exchange air duct connected between the air inlet and the air outlet, the box body is provided with a box door corresponding to the opening side of the battery cavity, the battery rack and the box door have a return air passage, and the return air passage is located between the air inlet passage and the air inlet.

[0016] Optionally, the battery cavity has a plurality of battery mounting positions arranged vertically, and the air-cooled energy storage system further comprises a plurality of battery modules, each battery module is installed in a battery mounting position, and each battery module comprises a shell and a battery pack arranged in the shell.

[0017] Optionally, the battery module further comprises a heat dissipation fan, and the heat dissipation fan is arranged at the heat dissipation outlet to discharge the airflow in the shell to the return air passage.

[0018] Optionally, the box body is divided into two installation areas in a second direction perpendicular to the first direction and the vertical direction, the battery rack is provided with a plurality of battery cavities corresponding to each installation area, and the plurality of battery cavities in the same installation area are spaced apart along the first direction.

[0019] This invention provides a solution by arranging multiple battery chambers within a battery rack, with air inlet channels extending vertically and communicating with the chambers between adjacent chambers. Simultaneously, multiple detachable air guide shells are positioned between the top of the battery rack and the top plate of the housing, with multiple outlets at the bottom of each air guide shell, each outlet corresponding to an air inlet channel. This allows for more even airflow to each battery chamber, improving the uniformity of heat dissipation. Furthermore, after the heat exchange device delivers the airflow into the air guide shells, it is then distributed from the multiple outlets to the corresponding air inlet channels. This avoids the need for a separate air guide structure for each air inlet channel, reducing the number of air guide shells and simplifying the structure of the air-cooled energy storage system. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the structure of an embodiment of the air-cooled energy storage system of this utility model;

[0022] Figure 2 for Figure 1 A schematic diagram of the structure of a wind-cooled energy storage system after the concealed portion of the structure is shown.

[0023] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0024] Figure 4 for Figure 2 Enlarged view of point B in the middle;

[0025] Figure 5 for Figure 2 Schematic diagram of the structure of the central air guide shell;

[0026] Figure 6 for Figure 2 A schematic diagram of the structure of the battery pack module;

[0027] Figure 7 for Figure 1 Cross-sectional view of a wind-cooled energy storage system.

[0028] Explanation of icon numbers:

[0029] 10, box; 11, box door; 12, return air passage; 13, mounting cavity; 20, battery holder; 21, battery cavity; 211, battery mounting position; 22, air inlet passage; 23, first vertical column; 24, second vertical column; 30, heat exchange device; 31, air inlet; 32, air outlet; 40, air guide shell; 41, guide inlet; 42, guide outlet; 50, battery module; 51, shell; 511, heat dissipation inlet; 512, heat dissipation outlet; 52, battery pack; 521, single battery; 53, heat dissipation fan; 60, air guide cylinder; 70, limiting piece.

[0030] The realization, functional features and advantages of the utility model will be further described in combination with embodiments with reference to the drawings. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the utility model will be clearly and completely described below in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0032] It should be noted that if the embodiments of the utility model involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement condition, etc. between components in a certain specific posture (as shown in the drawings), and if the specific posture changes, the directional indications also change accordingly.

[0033] In addition, if the embodiments of the utility model involve descriptions such as "first", "second", etc., the descriptions of "first", "second", etc. are only for description purposes, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first" and "second" can explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing throughout the text is that it includes three parallel schemes, and "A and / or B" includes A scheme, or B scheme, or A and B schemes. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of those skilled in the art, and when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, and is not within the protection scope required by the utility model.

[0034] The utility model provides a kind of air-cooled energy storage system.

[0035] In the embodiments of the utility model, as Figures 1 to 7As shown, the air-cooled energy storage system comprises a box 10, a battery rack 20, a heat exchange device 30 and a plurality of air guide shells 40. The battery rack 20 is arranged in the box 10 and has a plurality of battery cavities 21. The plurality of battery cavities 21 are arranged in a first direction (indicated by arrow X) to form air inlet channels 22 extending in an up-down direction between adjacent two battery cavities 21. The air inlet channels 22 are in communication with the battery cavities 21. The top of the battery rack 20 is spaced from the top plate of the box 10 to form a mounting cavity 13. Figure 2

[0036] The plurality of air guide shells 40 are detachably mounted in the mounting cavity 13 and arranged in the first direction. The air guide shell 40 has a guide inlet 41 and a plurality of guide outlets 42. The plurality of guide outlets 42 are located at the bottom of the air guide shell 40, and each guide outlet 42 is arranged corresponding to an air inlet channel 22. The heat exchange device 30 is arranged in the box 10. The heat exchange device 30 has an air outlet 32 in communication with the guide inlet 41.

[0037] Specifically, a plurality of battery modules 50 are arranged in each battery cavity 21. When the airflow sent by the heat exchange device 30 flows to the battery cavity 21 through the air inlet channel 22, the airflow can exchange heat with the battery modules 50, thereby taking away the heat of the battery modules 50 when flowing out of the battery cavity 21, achieving heat dissipation.

[0038] The upper end of the air inlet channel 22 is throughly arranged. After the air guide shell 40 is inserted into the mounting cavity 13, the guide outlet 42 located at the bottom of the air guide shell 40 corresponds to the upper end of the air inlet channel 22. In this way, the airflow can flow to each battery cavity 21 more uniformly, and the uniformity of heat dissipation of each battery cavity 21 can be improved. Since the airflow can flow to the air inlet channel 22 and the battery cavity 21 after flowing out of the guide outlet 42, the airflow is not easy to flow into the gap between the edge of the air guide shell 40 and the air inlet channel 22. When the bottom surface of the air guide shell 40 and the top surface of the battery rack 20 are relatively flat, the use requirement can be met, and a sealing ring does not need to be arranged between the air guide shell 40 and the battery rack 20. The assembly structure between the air guide shell 40 and the battery rack 20 is simple, the structure of the air-cooled energy storage system can be simplified, and maintenance is facilitated. Even if part of the airflow flows into the gap between the edge of the air guide shell 40 and the air inlet channel 22, it is still in the box 10, and the loss is very small, far less than the influence of the external environment temperature on the box 10.

[0039] In work, the heat exchange device 30 delivers the airflow into the air guide shell 40, and then divides the airflow into the corresponding air inlet channel 22 through the plurality of guide outlets 42. In this way, each air inlet channel 22 can avoid being arranged corresponding to one air guide structure, the number of air guide shells 40 can be reduced, and the structure of the air-cooled energy storage system can be simplified.

[0040] ​In this embodiment, the heat exchange device 30 has an air inlet 31, an air outlet 32, and a heat exchange air channel connected between the air inlet 31 and the air outlet 32. The air outlet 32 is in communication with the upper end of the air inlet channel 22. Specifically, the heat exchange device 30 has a fan that, when in operation, drives air flow from the air inlet 31 to the heat exchange air channel, and finally to the air inlet channel 22 from the air outlet 32. When the air flow flows through the heat exchange air channel, the air flow exchanges heat with the cold end of the heat exchange device 30, so that the air flow flowing to the air inlet channel 22 is a low-temperature cold air flow. When the low-temperature cold air flow flows through the battery module 50, it can take away the heat of the battery module 50 to form a hot air flow, and finally flow to the air inlet 31 to realize circulation. In this way, the air flow in the box 10 can be recycled, which can reduce the influence of the external environment (such as a high-temperature environment in summer) on the air flow in the box 10, improve the heat dissipation efficiency, and reduce the loss. The heat exchange device 30 can use compression refrigeration technology or other refrigeration technology.

[0041] In addition, in other embodiments, the upper end of the air inlet channel 22 can be connected to an external heat dissipation device to cool the battery module 50 by an external heat exchange device. Alternatively, a fan assembly can be provided on the box 10 to drive external air to flow from the air inlet channel 22 to the battery module 50 and then be discharged, so as to dissipate heat from the battery module 50 by the flowing air.

[0042] In some embodiments, each air guide shell 40 is arranged above two adjacent battery cavities 21, the air outlets 42 on the adjacent air guide shells 40 that are close to each other correspond to the same air inlet channel 22, and the air inlet 41 is located at the middle position of the air guide shell 40 in the first direction. Specifically, the number of air outlets 42 on the air guide shell 40 is three, the middle air outlet 42 corresponds to the air inlet channel 22 between the two battery cavities 21 below it, and the side air outlets 42 correspond to the adjacent air inlet channel 22 together with the side air outlets 42 on the adjacent air guide shell 40. When the air flow enters a single air guide shell 40 from the air inlet 41, a relatively large amount of air flow will flow to the middle air outlet 42 first, and a relatively small amount of air flow will be divided to the two side air outlets 42. Since the air outlets 42 on the adjacent air guide shells 40 that are close to each other correspond to the same air inlet channel 22 (i.e., the air inlet channel 22 between the adjacent air guide shells 40), the air intake of the air inlet channel 22 between the adjacent air guide shells 40 is close to the air intake of the air inlet channel 22 corresponding to the middle air outlet 42 of the air guide shell 40. This can make the air intake of each air inlet channel 22 more uniform, thereby improving the uniformity of heat dissipation of each battery cavity 21.

[0043] In some embodiments, a door 11 is provided on the opening side of the housing 10 corresponding to the battery cavity 21, the heat exchange device 30 is disposed on the door 11, and the inlet 41 is located on the side of the air guide shell 40 facing the door 11. This allows the heat exchange device 30 to be installed using the door 11, which, compared to placing the heat exchange device 30 on the top of the housing 10, reduces the height of the housing 10 or allows full utilization of the height space of the housing 10 for the battery module 50. Simultaneously, it allows the heat exchange device 30 to be closer to the air guide shell 40, shortening the cold airflow path and reducing energy loss.

[0044] In some embodiments, there are multiple heat exchange devices 30, and each heat exchange device 30 corresponds to a multiple air guide shell 40 to ensure that sufficient cold air is delivered to each air inlet channel 22 and improve the heat dissipation effect. Of course, in other embodiments, only one heat exchange device 30 may be provided, for example, the heat exchange device 30 may be located in the middle or at one end of the housing 10 in the first direction, and the airflow may be delivered to each air guide shell 40 through the air guide pipe.

[0045] In some embodiments, the inlet 41 and the outlet 32 ​​are connected by an air guide 60. One end of the air guide 60 is fixed to the air guide housing 40, and the other end is sealed against the edge of the outlet 32. That is, when the door 11 is open, the air guide 60 is always fixed to the air guide housing 40, and when the door 11 is closed, the air guide housing 40 is aligned with the outlet 32, thus ensuring normal airflow. This ensures airflow while reducing pressure on the door 11.

[0046] In some embodiments, the battery rack 20 has a plurality of first posts 23 and a plurality of second posts 24, the plurality of first posts 23 and the plurality of second posts 24 being arranged at intervals along a first direction, and the first posts 23 and the second posts 24 being arranged in a second direction (reference). Figure 2 As indicated by the middle arrow Y, the air guide shells 40 are spaced apart, with two air guide shells 40 positioned between any two adjacent first columns 23. The end of each air guide shell 40 furthest from the other is confined between the corresponding first column 23 and second column 24. Specifically, the first columns 23 and second columns 24 primarily support the weight of the battery rack 20 and battery module 50. During installation, the air guide shell 40 is first placed into the mounting cavity 13 and then slid towards the first column 23 until it partially extends between the first column 23 and second column 24, whereby the first column 23 and second column 24 confine the air guide shell 40. This reduces the need for fixing structures on the mounting frame for the air guide shell 40, thus simplifying the structure of the air-cooled energy storage system.

[0047] In some embodiments, the air-cooled energy storage system further comprises a limiting member 70, which is detachably installed between the top of the battery rack 20 and the top plate of the box 10, and is arranged at a position between any two adjacent first columns 23 and two air guide shells 40 corresponding to the position, so as to limit the air guide shell 40 on the side away from the second column 24. In this way, the air guide shell 40 between the two adjacent columns can be prevented from falling off the battery rack 20, the installation stability of the air guide shell 40 is improved, and the installation structure of the air guide shell 40 can be avoided, and the structure of the air guide shell 40 can be simplified. Of course, in other embodiments, the air guide shell 40 can also be locked on the battery rack 20 by screws.

[0048] In some embodiments, the box 10 is provided with a box door 11 corresponding to the opening side of the battery cavity 21, and the battery rack 20 and the box door 11 have a return air passage 12 therebetween, which is located between the air inlet passage 22 and the air inlet 31. Specifically, after the box door 11 is opened, the battery module 50 can be disassembled through the opening side of the battery cavity 21. By arranging the return air passage 12 between the battery rack 20 and the box door 11, when the cold air flow enters the battery cavity 21 from the air inlet passage 22 and passes through the battery module 50, it can be uniformly guided from the battery module 50 to the return air passage 12 on the side of the box door 11. In this way, while ensuring the effective circulation of the air flow, the structure can be simplified.

[0049] In some embodiments, the battery cavity 21 has a plurality of battery mounting positions 211 arranged in an up-down manner, and the air-cooled energy storage system further comprises a plurality of battery modules 50, each of which is installed in one of the battery mounting positions 211. The battery module 50 comprises an outer shell 51 and a battery pack 52 arranged in the outer shell 51. The side of the outer shell 51 is provided with a heat dissipation inlet 511 communicating with the air inlet passage 22, and the side of the outer shell 51 facing the box door 11 is provided with a heat dissipation outlet 512. Specifically, the battery pack 52 comprises a plurality of single batteries 521, i.e. when the cold air flow enters the outer shell 51 from the heat dissipation inlet 511, the cold air flow can directly pass through the surface of the battery pack 52 (single battery 521), so that the heat dissipation effect can be improved. Optionally, the opposite sides of the outer shell 51 are both provided with the heat dissipation inlet 511.

[0050] In some embodiments, the battery module 50 further comprises a heat dissipation fan 53 arranged at the heat dissipation outlet 512, which is used to guide the air flow in the outer shell 51 to the return air passage 12. In this way, the air flow can flow quickly through the battery module 50, the heat dissipation efficiency can be improved, and the air circulation speed in the box 10 can be accelerated, and the heat dissipation effect can be improved. Of course, in other embodiments, the heat dissipation fan 53 can also not be arranged, and the air flow can be circulated only by the fan in the heat dissipation device.

[0051] In some embodiments, the battery module 50 comprises a plurality of battery groups 52, each of which comprises a plurality of single batteries 521 arranged in sequence along a second direction, and the plurality of battery groups 52 are distributed along a first direction to form ventilation gaps between adjacent two battery groups 52. Specifically, the first direction, the second direction and the up-down direction are perpendicular to each other, that is, the ventilation gaps extend along the second direction, and the end of the battery group 52 away from the heat dissipation outlet 512 is spaced apart from the shell 51 to enable the cold air flowing from the heat dissipation inlet 511 to flow to the heat dissipation gaps and finally flow out from the heat dissipation outlet 512. Compared with the way that the battery single extends along the first direction from one side of the shell 51 to the other side, the above arrangement can increase the heat dissipation area of the battery group 52 and improve the heat dissipation effect.

[0052] In some embodiments, the box 10 is divided into two installation areas in a second direction perpendicular to the first direction and the up-down direction, and the battery rack 20 is provided with a plurality of battery cavities 21 corresponding to each installation area, and the plurality of battery cavities 21 in the same installation area are arranged in sequence along the first direction. In this way, the battery module 50 can be disassembled from the opposite sides of the box 10, the internal space of the box 10 can be fully utilized, the capacity of the air-cooled energy storage system can be increased, and maintenance can be facilitated. In some embodiments, the second column 24 is located between the two installation areas, and each installation area is provided with a plurality of first columns 23 away from the other installation area.

[0053] The above description is only preferred embodiments of the present application, and does not limit the patent scope of the present application. Any equivalent structural transformation made according to the content of the present application specification and drawings, or direct / indirect application in other related technical fields is included in the patent protection scope of the present application.

Claims

1. An air-cooled energy storage system, characterized by, The air-cooled energy storage system comprises: a box body; a battery rack arranged in the box body and having a plurality of battery cavities, the plurality of battery cavities being arranged in a first direction to form air inlet channels extending in an up-down direction between adjacent two battery cavities, the air inlet channels being communicated with the battery cavities, and a top of the battery rack being spaced from a top plate of the box body to form a mounting cavity; a plurality of air guide shells being detachably arranged in the mounting cavity and in the first direction, the air guide shells having an air inlet and a plurality of air outlets, the plurality of air outlets being arranged at a bottom of the air guide shells and corresponding to the air inlet channels; and a plurality of heat exchange devices arranged in the box body and having air outlets communicated with the air inlets. Each of the air guide shells is arranged above the adjacent two battery cavities, the air outlets of the adjacent two air guide shells are arranged corresponding to the same air inlet channel, and the air inlets are arranged at a middle position of the air guide shells in the first direction.

2. The air-cooled energy storage system of claim 1, wherein, The box body is provided with a box door corresponding to the opening side of the battery cavities, the heat exchange devices are arranged in the box door, and the air inlets are arranged on a side of the air guide shells facing the box door.

3. The air-cooled energy storage system of claim 2, wherein, The number of the heat exchange devices is plural, and the plurality of heat exchange devices correspond to the plurality of air guide shells one by one.

4. The air-cooled energy storage system of claim 3, wherein, The air inlets and the air outlets are connected by air guide tubes, one end of the air guide tubes is fixed to the air guide shells, and the other end of the air guide tubes is sealed against the edge of the air outlets.

5. The air-cooled energy storage system of claim 4, wherein, The battery rack has a plurality of first vertical columns and a plurality of second vertical columns, the plurality of first vertical columns and the plurality of second vertical columns are arranged in the first direction, the first vertical columns and the second vertical columns are arranged in a second direction perpendicular to the first direction and the up-down direction, two air guide shells are arranged between any adjacent two first vertical columns, and one end of any air guide shell away from another air guide shell is limited between the corresponding first vertical column and the second vertical column.

6. The air-cooled energy storage system of claim 1, wherein, The air-cooled energy storage system further comprises a limiting member detachably arranged between the top of the battery rack and the top plate of the box body and corresponding to the position between the two air guide shells between any adjacent two first vertical columns to limit the side of the air guide shell away from the second vertical column.

7. The air-cooled energy storage system of claim 6, wherein, The heat exchange device further has an air inlet and a heat exchange air duct connected between the air inlet and the air outlet, the box body is provided with a box door corresponding to the opening side of the battery cavities, the battery rack and the box door have a return air channel, and the return air channel is located between the air inlet channel and the air inlet.

8. The air-cooled energy storage system of claim 1, wherein, The battery cavity has a plurality of battery mounting positions arranged in the up-down direction, the air-cooled energy storage system further comprises a plurality of battery modules, each of the battery modules is arranged in one of the battery mounting positions, the battery module comprises a shell and a battery pack arranged in the shell, a side of the shell is provided with a heat dissipation inlet communicated with the air inlet channel, and a side of the shell facing the box door is provided with a heat dissipation outlet.

9. The air-cooled energy storage system of claim 8, wherein, The battery module further comprises a heat dissipation fan arranged at the heat dissipation outlet to discharge the airflow in the shell to the return air channel. ​ 10. The air-cooled energy storage system of any one of claims 1 to 9, wherein, The box is divided into two installation areas in a second direction perpendicular to the first direction and the up-down direction, and the battery rack is provided with a plurality of battery cavities corresponding to each installation area, and the plurality of battery cavities of the same installation area are arranged in the first direction.

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